Networking

Detailed Description

Seastar provides a simple networking API, backed by two TCP/IP stacks: the POSIX stack, utilizing the kernel's BSD socket APIs, and the native stack, implement fully within seastar and able to drive network cards directly. The native stack supports zero-copy on both transmit and receive, and is implemented using seastar's high performance, lockless sharded design. The network stack can be selected with the --network-stack command-line parameter.

Classes
class	seastar::connected_socket
class	seastar::socket
class	seastar::server_socket
	A listening socket, waiting to accept incoming network connections. More...

Functions
server_socket	seastar::listen (socket_address sa)
server_socket	seastar::listen (socket_address sa, listen_options opts)
future< connected_socket >	seastar::connect (socket_address sa)
future< connected_socket >	seastar::connect (socket_address sa, socket_address local, transport proto=transport::TCP)

Function Documentation

connect() [1/2]

future< connected_socket > seastar::connect

(

socket_address

sa

)

Establishes a connection to a given address

Attempts to connect to the given address.

Parameters

sa	socket address to connect to

Returns

a connected_socket object, or an exception

connect() [2/2]

future< connected_socket > seastar::connect	(	socket_address	sa,
		socket_address	local,
		transport	proto
	)

Establishes a connection to a given address

Attempts to connect to the given address with a defined local endpoint

Parameters

sa	socket address to connect to
local	socket address for local endpoint
proto	transport protocol (TCP or SCTP)

Returns

a connected_socket object, or an exception

listen() [1/2]

server_socket seastar::listen

(

socket_address

sa

)

Listen for connections on a given port

Starts listening on a given address for incoming connections.

Parameters

sa	socket address to listen on

Returns

server_socket object ready to accept connections.

See also

listen(socket_address sa, listen_options opts)

listen() [2/2]

server_socket seastar::listen	(	socket_address	sa,
		listen_options	opts
	)

Listen for connections on a given port

Starts listening on a given address for incoming connections.

Parameters

sa	socket address to listen on
opts	options controlling the listen operation

Returns

server_socket object ready to accept connections.

See also

listen(socket_address sa)